| 微量Sb对Mg-7Gd-3Y铸态合金组织及力学性能的影响 |
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| 引用本文： | 刘子利,周桂斌,刘希琴,朱晓春.微量Sb对Mg-7Gd-3Y铸态合金组织及力学性能的影响[J].特种铸造及有色合金,2011,31(1). |
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| 作者姓名： | 刘子利 周桂斌 刘希琴 朱晓春 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2009577); 航空科学基金资助项目(2008ZF52058) |
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| 摘 要： | 利用光学显微镜、扫描电镜和X射线衍射仪,分析研究了微量Sb对Mg-7Gd-3Y铸态合金组织及其室温和高温力学性能的影响。结果表明,在合金中加入1%的Sb,促进了新的颗粒相Gd5Sb3和Y3Sb产生,使晶粒细化;合金的室温和高温抗拉强度分别提高了3.3%和5.3%;屈服强度分别提高了12.8%和17.0%;伸长率分别降低了15.8%和12.3%。
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| 关 键 词： | Mg-7Gd-3Y合金 Sb 组织 力学性能 |
Effects of Minor Sb on Microstructure and Mechanical Properties of Cast Mg-7Gd-3Y Alloy |
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| Liu Zili,Zhou Guibin,Liu Xiqin,Zhu Xiaochun.Effects of Minor Sb on Microstructure and Mechanical Properties of Cast Mg-7Gd-3Y Alloy[J].Special Casting & Nonferrous Alloys,2011,31(1). |
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| Authors: | Liu Zili Zhou Guibin Liu Xiqin Zhu Xiaochun |
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| Affiliation: | Liu Zili,Zhou Guibin,Liu Xiqin,Zhu Xiaochun(College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing,China) |
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| Abstract: | Effects of minor Sb on as-cast microstructure and ambient as well as elevated mechanical properties of Mg-7Gd-3Y alloy were investigated by OM(optical microscope),SEM(scanning electron microscope) and XRD(X-ray diffraction).The results show that Gd5Sb3 and Y3Sb phase can be created with 1%Sb addition in the alloy,refining obviously size of the grain.Meanwhile,ambient and elevated tensile strengths increase by 3.35% and 5.3%,yield strength increase by 12.8% and 17.0%,and elongation decrease by 15.8% and 12.3... |
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| Keywords: | Mg-7Gd-3Y Alloy Sb Microstructure Mechanical Properties |
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